Power-off the machine. This is translated into an
activation request for poweroff.target and is equivalent to systemctl
poweroff.

6

Reboot the machine. This is translated into an activation
request for reboot.target and is equivalent to systemctl reboot.

2, 3, 4, 5

Change the SysV runlevel. This is translated into an
activation request for runlevel2.target, runlevel3.target, ... and is
equivalent to systemctl isolate runlevel2.target, systemctl isolate
runlevel3.target, ...

1, s, S

Change into system rescue mode. This is translated into
an activation request for rescue.target and is equivalent to systemctl
rescue.

q, Q

Reload daemon configuration. This is equivalent to
systemctl daemon-reload.

u, U

Serialize state, reexecute daemon and deserialize state
again. This is equivalent to systemctl daemon-reexec.